Oil-pump drain pipe



. April 16, 1929. T BENNETT 1,709,602

OIL PUMP DRAIN PIPE Filed Nov. 18, 1926 I6 15 v 14- H firzwfifor W5617171977 Patented Apr. 16, 1929.

UNITED" STATES PATENT: OFFICE.

. THOMAS B. BENNETT, or MusKneoN, MICHIGANQASSIGNVOETTO BENNETT rUMrsCOR- PORATVION, or MUSTKEIGON, MICHIGAN, A CORPORATION or. MICHIGAN.)

OIL-rum? DRAIN PIPE. i

Application filed November 18, 1926. Serial No. 149,060.

This invention relates to an oil pump and is more particularly concernedwith an improvement in oil pumps by means of which any dripping of oilfrom the pump. may be returned to the receptacle from which it iswithdrawn. It is common practice to ap ply pumps to barrels or casks inwhich a considerablequantity of oil is contained and to pump therefrominto a measuring can or receptacle from which it is transferred directlyto the mechanism lubricated. When the pump is stopped and the can orreceptacle removed from below the pump outlet there is liable to bedripping of oil. It is to catch such dripping and return the same to thebarrel, or cask on which the pump is installed that I have made thepresent invention, thereby obviating loss of-oil and avoiding messyconditions due to oil over the upper end of the barrel or cask.

The invention which I have made is simple yet very practical and useful,being readily applied to an oil pump of the character outlined. A drainpipe is normally located underneath the delivery end of .thepump outletand is automatically moved from such position by the receptacle intowhich oil is pumped when it is placed under such outlet, but as soon asthe receptacle isre-v Fig. 1 is an elevation showing an oilpumpw'th myinvention applied thereto, the drip collecting pipe being moved out ofthe way by an oil receiving receptacle located undcrniath the outlet. ofthepump.

Fig. 2 is a fragmentary enlarged elevation,

with parts, broken away and shown in section, showing the manner inwhich the drip collecting pipe is mounted on the pump and used, and

Fig. 3 is a vertical transverse section substantially on the plane ofline 33 of Fig. 2. Like reference characters refer to like parts in thedifferent figures of the drawin the usual manner, this being well knownand not being illustrated in the drawing. Theoil which is pumpedpasses'upwardly throughan extension 4 above the head'2 andis deliveredtherefrom laterally through a nipple 5 into the delivery or outlet member (3. g

This delivery or outlet member 6 is hollow, the nipple 5 threading intoone end thereof. Theopposite-end is closed and a short outlet tube 7 issecurednear the outer end of the member and passes through the lowerside so that the oilmay escape through this tube. 'On, the under sideof-the member 16 it is provided with spaced apart integrally castdepending sides .8 the inner ends of which are connected by a crossmember 9 and the outer ends joined with a substantially cylindrical wall10 located around and extending below the lower-end of the outlet tube 7described. V

At the lower end of the cylinder is a second head 11 which is. formedinits upper portion with a downwardly tapered valve seat 12 in which aball 13 is located, the

same serving to cooperate with an opening,

leading'to a pipe 14 which extends downwardly into a barrel or cash 15on which the pump is mounted. The mounting is'in any suit-able manner,the lower end of the head 11 being threaded preferably to screwinto asuitable opening in the upperside of the barrel as indicated at 16. r I

The head 11 atone sideis provided with an integrally formed elbow 1'?which is hollowand which at its lower portion communicates with theinterior of the barrel. or cask 15 so that any oil'coming to the elbow17 is returned to the barrel orcask around the pipe 14:. The upper endof the elbow 1.7 has a relatively large opening 'and ismachined so as tomake portions of a curved or ball surface, as indicated at 17 thepurpose of which will later appear.

A drip pipe 18 is provided having an intermediate straight portionnormally inclined to the vertical and the lower end 18 bent at an anglethereto and normally positioned vertical, its lower end passing into theopening in the upper end of the elbow 17. A'pin 19 passes through theelbow 17 and the lower end of the pipe 18 whereby the pipe is permittedto turn on a horizontal axis. The lower section 18* of the pipe isequipped with acap 20 which is shaped so that it fits securely againstthe curved or round surface of the part 17 covering the opening intowhich the lower end of the pipe 'isinserted. A spring 21 may beattachedto the cylinder 1 or to the binding rods which bind the head 2 and 11againstthe ends oi? said cylinder bearing at its iree upper end againstthe pipe and normally holding the pipe in outer position.

-The upper end of thc pipe includes a no mally vertically positionedsection18" be. at an angle from the intermediate main and longer so; ionof the pipe. This upper end of the pipe received in the space surroundedby the spaced apart sides 8, the end 9 and the end 10 depending from theoutlet member 6. The upper end oi the pipe therefore has a limitedn'iovemcn't between the two; ends 9 and 10 and can not move laterallycine held against such movement by the sides 8 as evident.

\Vhenthe pump is not in use the spring 21 holds the pipe in outerposition, as shown in Fig. 2, with its upper end directly below theoutlet tube or sleeve 7. hen the pump is to be used a receptacle forreceiving; oil, such as indicated at 22 in Fig. 1, is placed against thedrip pipe and moves it back toward the pump as shown in Fig. 1. The pumpmay then be operated so as to fill the receptacle at 22. lVhen it isfilled and operation of the pump stopped'and the receptacle taken away,its removal frees the drip pi. )e which immediately returns to theposition shown in Fig. 2 or under the outlet sleeve 7,

so that any oil dripping from this sleeve is carried back through thedrip pipe to the sleeve 7 and thence to the barrel or cash 15 from whichit was withdrawn.

' The construction described is very practical, is a simple andeconomical construction to make and is easily assembled so that the costof manufacture is low. \Vhile a spring- 21 shown and described for thepurpose stated, such spring is not absolutely necessary as it is thenormal tendency'o'i the pipe to 'move to its outer position by gravity.The spring therefore is for additional assurance when it is used and inmany cases it is not used at all. The invention is defined in theappended claims and is to be considered comfrom said 1107421195 a fixedguard Lzoaeoe association with said nozzle to receive oiltherefrom andalso adapted to be moved away from said nozzle and means for (JOVB' mgsaid'open end of the drain pipe when it is moved away from said nozzle.

2. In combination with an oil pump having an outlet nozzle, a movabledrain pipe having an open end adapted to be moved into association withsaid nozzle to receive oil therefrom and also to be moved away -l'ro1nsaid nozzle and a fixed guard arranger to cover the open end of saiddrain pipe at any of its positions away fronr said nozzle.

In combination with an oil pump having an outlet nozzle, a movable drainpipe havin an open end adapted to he moved nto association with saidnozzle to receive oil therefrom and also to be moved away arranged tocover the open end of said drain pipe at any of its positions away fromsaid nozzle, and guide members associated with said guard to guide andlimit said drain pipe in its movements.

l. In combination with an oil pump, a

channel. having continuous sides and ends,

an outlet nozzle of 'said oil pump located within said channel and adrain pipe having. a movable open end irremovably located in saidchannel and adapted to traverse the same from a position in associationwith said nozzle to receive oil therefrom to a position away from saidnozzle.

5.1n combination with an oil pump, a downwardly opening channel havingcontinuous sides and ends an outlet nozzle of said pump extending intosaid channel and a drain pipe ha in a movable upwardly opening endirremovably located within said channel and adapted to be moved to aposition in association with said nozzle to receive oil therefrom and toa position away from said nozzle. r

In testimony whereof I afiix my signature. THOMAS E. BENNETT.

